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Loans and Allowance for Loan Losses - Past Due Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | $ 2,564 | $ 2,696
Total Past Due and Nonaccrual | 5,441 | 5,921
Current Loans | 1,832,443 | 1,737,160
Total loans | 1,867,747 | 1,777,239
Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 124 | 272
Total Past Due and Nonaccrual | 299 | 668
Current Loans | 872,283 | 841,677
Total loans | 890,462 | 860,027
Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 1,403 | 844
Total Past Due and Nonaccrual | 2,612 | 2,928
Current Loans | 396,247 | 395,614
Total loans | 405,531 | 407,254
Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 621 | 547
Total Past Due and Nonaccrual | 892 | 890
Current Loans | 214,230 | 182,403
Total loans | 219,751 | 187,895
Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 377 | 909
Total Past Due and Nonaccrual | 1,322 | 1,165
Current Loans | 339,546 | 304,532
Total loans | 341,207 | 308,254
Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 39 | 124
Total Past Due and Nonaccrual | 316 | 270
Current Loans | 10,137 | 12,934
Total loans | 10,796 | 13,809
Purchased Credit Impaired Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 29,863 |
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 17,880 |
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 6,672 |
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 4,629 |
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 339 |
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total loans | 343 |
30 to 60 Days Past Due and Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 1,635 | 2,160
30 to 60 Days Past Due and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 175 | 377
30 to 60 Days Past Due and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 321 | 1,168
30 to 60 Days Past Due and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 271 | 343
30 to 60 Days Past Due and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 684 | 155
30 to 60 Days Past Due and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 184 | 117
61 to 89 Days Past Due and Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 634 | 481
61 to 89 Days Past Due and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 19
61 to 89 Days Past Due and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 391 | 462
61 to 89 Days Past Due and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 0
61 to 89 Days Past Due and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 166 | 0
61 to 89 Days Past Due and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 77 | 0
Past Due 90 Days or More and Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 608 | 584
Past Due 90 Days or More and Accruing [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 0
Past Due 90 Days or More and Accruing [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 497 | 454
Past Due 90 Days or More and Accruing [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 0 | 0
Past Due 90 Days or More and Accruing [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | 95 | 101
Past Due 90 Days or More and Accruing [Member] | Consumer and Other [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Recorded investment, past due | $ 16 | $ 29

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